Concealed door hinge



Feb. 26, 1946. Y c. J. PETERSEN 2,395,501

CONCEALED DOOR HINGE Original Filed July 12, 1937 Qwumvtom @QaMM M Patented Feb.'26, 1946 Carl J. Petersen, Moline, Ill.

Substituted for abandoned application Serial No.

153,189, July 12, 1937. This application January 30, 1943, Serial No. 474,195

(Granted under the act of March 3, 1883, as

' amended April 30, 1928; 370 0. G. 757) r lClaim.

The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon.

The present application is a substitute for my previously filed application for Letters- Patent, Serial Number 153,189, filed July 12, 1937.

My present invention relates to door hinges and more particularly to door hinges of the concealed typ being designed especially for use upon motor vehicle doors but adapted also for refrigerators, house and oflice doors, etc. Among the objects of this invention are to provide a hinge of the type indicated which will be especially strong and sag-proof; to provide a hinge of the character indicated which will be entirely invisible when the door is closed and yet will permit the door to swing outwardly and completely clear the body of the machine or other structure, as it swings; to provide a hinge of the type indicated which is so proportioned and constructed that the door is permitted to close without the external cover thereof coming in contact with the metal cover of the body and yet the two will fit so closely together that there is substantially no opening through which rain can get into the body of the vehicle or other structure upon which this hinge is used; to provide a hinge for the purpose indicated in which, in event of wear of hinge parts, replacement of an inexpensive part may be made, avoiding the necessity of substitution of a whole new hinge; and such further objects, advantages,,and capabilities as will hereafter appear and as are inherent in the construction disclosed herein. A further object of the invention is to devise a hinge of the character described implemented with means which forms part of the hinging mechanism, adapted to limit the extent of turning or opening o! the door portion v of the hinge relative to the fixedoasing portion.

sense.

In the drawing annexed hereto and forming a part hereof, Fig. 1 represents a horizonal section through a hinge in accordance with my invention, the same being represented as taken substantially along the plane indicated by the line l-I of Fi 2;

Fig. 2 represents an elevation of a hinge constructed in accordance with my present invention, the same being taken in the direction indicated by the arrows 2--2, Fig. 1;

accordance with my invention;

Fig. 7 represents a transverse section of a modified construction in which the bearing bushings are omitted.

The present hinge 'comprises a pair of U-shaped body members I and 2 connected by blocks 5 and 6, the body member I being provided with attaching flanges 3 at the free ends of the arms of the U-shapedmember, and the member 2 being moved with flanges 4 at the closed end of the U-shaped member. shown in Fig. 1, the arms of the U-shaped member 2 are not straight but are somewhat hook-shaped in order to permit the necessary amount of swinging of the hinge parts in order to permit the desired amount of opening of the door.

As shownclearly in Figs. 2 and 3, one of the U-shaped members fits within the other one and is pivoted to swing therein, as shown in Fig. ,1. The blocks 5 and 6 are provided at their corners with bosses 1. and 8 from which extend the pintles 9. Bushings l0, II, and I2, which-are shown in Figs. 4, 5, and 6 in accordance with various forms which they may take, are pressed into openings in the U-shaped members I and 2 and cooperate with the pintles 9 in forming bearings between the members I and 2 and the blocks 5 and 6. The bushings have a [press fit in the openings in the members I and 2 so that they will not rotate therein. The pintles 9 have their cylindrical surface finished reasonably accurately so that the bearings will be substantially frictionless when the door swings t open or closed position.

In Fig. 4 there is shown a simple bearing of a pintle 9 within a bushing [0. In Fig. 5 this is shown as a ball hearing by involving a large bushing ll having a ball race in its internal surface and balls mounted in the space between the pintle 9 and the bushing II. In Fig. 6 the bushing I2 is in the form of a cup which has a closed end I3 and within which is a felt-like material M which is saturated with a lubricant.

In manufacturing the parts, the U-shaped members are made somewhat V-shaped in form so thatithe pintles I of the blocks 5 and 8 may beinsel'todintheopeningsinthearmsoithe U-shaped members. After this has been done, the U-shaped members are bent into true form so that the arms thereornearly engage the bosses I and l. The bushings which it is intended to use are then pressed into the openings indefinitely. With any oi. the forms, it is possible to remove the bushing, if the latter gets unduly worn so as to permit sagging or the door. However, it is believed that this will never be necessary, within the life of the ordinary motor vehicle. V

In the construction shown in Fig. 7, the 'pintles O are replaced by pins 9a which extend through the blocks I and 8 and the parallel arms of the ,U-shaped members I and 2. In this construction, the bushings ID, or their equivalents, are entirely omitted. 7

It should perhaps be noted that, by changing the relative positions 0! the pintle bearings in the arms 0! member I, a change can be accomplished in the distance which the door moves outwardly away from. the body when opening. This is utilizedto compensate for differences in body curvature.

The aforedescribed parts of the hinge are so designed that they provide a positive stop to the turning or opening movement of the body member 2 relative to the fixed body member I.

That is to say, the improved hinge is inherently aerator adapted to limit or check opening movement of the hinge without the need of providing separate or further stop means. The capability of the hinge parts to serve as an inherent stop or check is best 'seen in the dot-and-dash position or body member 2, Fig. 1 when fully turned to open position. In this position its two parallel arms 2 abut the extremities of the boss 8 of the pivot of block I on the parallel arms 0! member i; this abutting point between the arms 2 and the said pivot of block 8 is designated "A" in Fig. 1. The manner in which the parallel arms 2 contact the extremities of the pivot, or rather the bosses 8, is best seen in Fig. 2, where the two points of abutment are designated "a."

It will 0! course be understood that the specific description of structure set forth herein may be departed from without departing from the spirit oi. this invention as set forth in this specification and the appended claim. 1

I claim: In a concealed door hinge having substantialiy no exposed operating parts when in closed position and including a stationary member adapted to be secured in a casing and a the opening of said hinge.

CARL J. PETERSEN. 

